Guest guest Posted January 14, 2010 Report Share Posted January 14, 2010 http://www.sciencedirect.com/science?_ob=ArticleURL & _udi=B6TWB-4846HWP-5 & _user=1\ 0 & _rdoc=1 & _fmt= & _orig=search & _sort=d & _docanchor= & view=c & _searchStrId=1165425546 & \ _rerunOrigin=google & _acct=C000050221 & _version=1 & _urlVersion=0 & _userid=10 & md5=8d3\ 43053405f8013c795968e8679879f Quote Link to comment Share on other sites More sharing options...
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